An online date units converter is a handy tool that helps you quickly and accurately convert time durations from one unit to another. Whether you need to convert seconds, minutes, hours, days, weeks, months, or years, this tool simplifies the process. With this converter, you can easily and quickly convert time periods to a different unit of measurement. For example, it can help you find out what is 17 Years in Minutes?
This converter can help you with a wide range of time-related calculations, such as calculating the number of seconds in a given number of minutes or the number of days in a particular number of months. It is a practical tool for anyone who needs to work with time durations in different units and wants to save time and avoid errors in their calculations.
For example, if you want to know What is 17 Years in Minutes, simply select ‘Minutes’ as the starting unit, enter ’17’ as the quantity, and select ‘Years’ as the target unit. The converter will then display the converted result, which in this case would be 8,940,960.
To use the online date units converter, simply select the unit you want to convert from (e.g., ‘Minutes’), enter the quantity you want to convert (e.g., ’17’), and choose the target unit you want to convert to (e.g., ‘Years’). Then click the ‘Convert’ button to get the results.
Whether you’re a student, a researcher, a programmer, or simply someone who wants to know how long it will take to complete a particular task, this online date units converter is a quick and easy way to get the answers you need.
A year (symbol: y; also abbreviated yr.) is the orbital period of the Earth moving in its orbit around the Sun. Due to the Earth’s axial tilt, the course of a year sees the passing of the seasons, marked by changes in weather, the hours of daylight, and, consequently, vegetation and soil fertility. In temperate and subpolar regions around the globe, four seasons are generally recognized: spring, summer, autumn and winter. In tropical and subtropical regions several geographical sectors do not present defined seasons; but in the seasonal tropics, the annual wet and dry seasons are recognized and tracked. A calendar year is an approximation of the number of days of the Earth’s orbital period as counted in a given calendar. The Gregorian, or modern, calendar, presents its calendar year to be either a common year of 365 days or a leap year of 366 days.
The minute is a unit of time or of angle. As a unit of time, the minute (symbol: min) is equal to 1⁄60 (the first sexagesimal fraction) of an hour, or 60 seconds. In the UTC time standard, a minute on rare occasions has 61 seconds, a consequence of leap seconds (there is a provision to insert a negative leap second, which would result in a 59-second minute, but this has never happened in more than 40 years under this system). As a unit of angle, the minute of arc is equal to 1⁄60 of a degree, or 60 seconds (of arc). Although not an SI unit for either time or angle, the minute is accepted for use with SI units for both. The SI symbols for minute or minutes are min for time measurement, and the prime symbol after a number, e.g. 5′, for angle measurement. The prime is also sometimes used informally to denote minutes of time. In contrast to the hour, the minute (and the second) does not have a clear historical background. What is traceable only is that it started being recorded in the Middle Ages due to the ability of construction of “precision” timepieces (mechanical and water clocks). However, no consistent records of the origin for the division as 1⁄60 part of the hour (and the second 1⁄60 of the minute) have ever been found, despite many speculations.To convert 17 years into minutes we have to multiply 17 by the conversion factor in order to get the time amount from years to minutes. We can also form a simple proportion to calculate the result:
If we want to calculate how many Minutes are 17 Years we have to multiply 17 by 2629746 and divide the product by 5. So for 17 we have: (17 × 2629746) ÷ 5 = 44705682 ÷ 5 = 8941136.4 Minutes
17 yr to min conversion result above is displayed in three different forms: as a decimal (which could be rounded), in scientific notation (scientific form, standard index form or standard form in the United Kingdom) and as a fraction (exact result). Every display form has its own advantages and in different situations particular form is more convenient than another. For example usage of scientific notation when working with big numbers is recommended due to easier reading and comprehension. Usage of fractions is recommended when more precision is needed.
Regular physical activity is proven to help prevent and manage noncommunicable diseases such as heart disease, stroke, diabetes and several cancers. It also helps prevent hypertension, maintain healthy body weight and can improve mental health, quality of life and well-being.
In 2018 WHO launched a new Global Action Plan on Physical Activity 2018-2030 which outlines four policy actions areas and 20 specific policy recommendations and actions for Member States, international partners and WHO, to increase physical activity worldwide. The global action plan calls for countries, cities and communities to adopt a ‘whole-of-system’ response involving all sectors and stakeholders taking action at global, regional and local levels to provide the safe and supportive environments and more opportunities to help people increase their levels of physical activity.Lives are becoming increasingly sedentary, through the use of motorized transport and the increased use of screens for work, education and recreation. Evidence shows higher amounts of sedentary behaviour are associated with the following poor health outcomes:
WHO defines physical activity as any bodily movement produced by skeletal muscles that requires energy expenditure. Physical activity refers to all movement including during leisure time, for transport to get to and from places, or as part of a person’s work. Both moderate- and vigorous-intensity physical activity improve health.Popular ways to be active include walking, cycling, wheeling, sports, active recreation and play, and can be done at any level of skill and for enjoyment by everybody.The drop in physical activity is partly due to inaction during leisure time and sedentary behaviour on the job and at home. Likewise, an increase in the use of “passive” modes of transportation also contributes to insufficient physical activity.Globally, 81% of adolescents aged 11-17 years were insufficiently physically active in 2016. Adolescent girls were less active than adolescent boys, with 85% vs. 78% not meeting WHO recommendations of at least 60 minutes of moderate to vigorous intensity physical activity per day. Regular physical activity, such as walking, cycling, wheeling, doing sports or active recreation, provides significant benefits for health. Some physical activity is better than doing none. By becoming more active throughout the day in relatively simple ways, people can easily achieve the recommended activity levels. WHO guidelines and recommendations provide details for different age groups and specific population groups on how much physical activity is needed for good health.Increased levels of physical inactivity have negative impacts on health systems, the environment, economic development, community well-being and quality of life.
The global action plan and ACTIVE propose policy options that can be adapted and tailored to local culture and contexts to help increase levels of physical activity globally, these include:
To support a ‘whole of system’ response, WHO is collaborating across multiple sectors to strengthen coordination, advocacy and alignment of policy and actions. WHO has established partnerships to help support Member States in their efforts to promote physical activity – these include working with the United Nations Educational, Scientific and Cultural Organization (UNESCO) to advance and align the implementation of GAPPA and the Kazan Action Plan on physical education, sports and physical activity. WHO is also working with many other UN agencies in the shared agenda to promote Sport for Development and Peace. Within the sports system WHO is collaborating with the International Olympic Committee and International Sports Federations, The International Federation of Football Associations, FIFA, and others to support and strengthen the promotion of health through sports and the sports for all agenda.
To help countries and communities measure physical activity in adults, WHO has developed the Global Physical Activity Questionnaire (GPAQ). This questionnaire helps countries monitor insufficient physical activity as one of the main NCD risk factors. The GPAQ has been integrated into the WHO STEPwise approach, which is a surveillance system for the main NCD risk factors.The WHO toolkit ACTIVE launched in 2019 provides more specific technical guidance on how to start and implement the 20 policy recommendations outlined in the global action plan. WHO is also working with international experts on the development of methods and instruments to assess physical activity in children under the age of five years of age and under 10 years of age. In addition, WHO is testing the use of digital and wearable technologies, such as pedometers and accelerometers, in national population surveillance of physical activity in adults. This work will be extended to include children and will inform the development of updated global guidance on the monitoring of physical activity and sedentary behaviours. In 2018, the World Health Assembly agreed on a global target to reduce physical inactivity by 15% by 2030 and align with the Sustainable Development Goals. The commitments made by world leaders to develop ambitious national SDG responses provides an opportunity to refocus and renew efforts at promoting physical activity.
To assess physical activity among schoolchildren WHO has collaborated on a questionnaire module which has been integrated into the Global school-based student health survey (GSHS). The GSHS is a WHO/US CDC surveillance project designed to help countries measure and assess the behavioural risk factors and protective factors in 10 key areas among young people aged 13 to 17 years.
In high-income countries, 26% of men and 35% of women were insufficiently physically active, as compared to 12% of men and 24% of women in low-income countries. Low or decreasing physical activity levels often correspond with a high or rising gross national product.Globally, 28% of adults aged 18 and over were not active enough in 2016 (men 23% and women 32%). This means they do not meet the global recommendations of at least 150 minutes of moderate-intensity, or 75 minutes vigorous-intensity physical activity per week.
The drop in physical activity is partly due to inaction during leisure time and sedentary behaviour on the job and at home. Likewise, an increase in the use of \”passive\” modes of transportation also contributes to insufficient physical activity.
Countries and communities must take action to provide everyone with more opportunities to be active, in order to increase physical activity. This requires a collective effort, both national and local, across different sectors and disciplines to implement policy and solutions appropriate to a country’s cultural and social environment to promote, enable and encourage physical activity.
This tool converts years to minutes and vice versa. 1 year = 525948.76666668 minutes. The user must fill one of the two fields and the conversion will become automatically.
9059 miles per hour to knots 2872 hertz to rotations per minute 3136 millivolts to volts 7415 megavolt-amperes reactive hour to megavolt-amperes reactive hour 5032 lux to foot-candles 9067 megahertz to hertz 6127 millivolt-amperes reactive to kilovolt-amperes reactive 3530 watt-hours to kilowatt-hours 1027 kilowatt-hours to kilowatt-hours 3753 millivolts to kilovolts 5786 joules to kilojoules 7906 kilovolt-amperes reactive hour to volt-amperes reactive hour 5489 megabytes to terabits 7692 dozens to each 4941 years to seconds 9472 gigavolt-amperes reactive hour to millivolt-amperes reactive hour 5796 kilolitres per hour to litres per hour 2533 cubic feet per hour to pints per second 5293 seconds per metre to minutes per kilometre 3867 yards to centimeters 8862 amperes to milliamperes 6881 feet per second to feet per second 649 kilovolt-amperes reactive to gigavolt-amperes reactive 8628 each to each 4486 fluid ounces to cubic centimeters 7453 milliwatts to gigawatts 5108 lux to foot-candles 6012 radians per second to terahertz 7726 millivolt-amperes reactive to megavolt-amperes reactive 5893 gigavolt-amperes reactive hour to gigavolt-amperes reactive hour 6416 megawatts to milliwatts 1587 cubic kilometers to kilolitres 4625 megabytes to terabytes 9222 megawatt-hours to gigawatt-hours 6379 degrees celsius to degrees rankine 2605 terahertz to hertz 3556 joules to gigawatt-hours 8535 gigawatts to kilowatts 2266 minutes per mile to seconds per foot 2512 degrees to arcseconds 585 gigavolt-amperes to megavolt-amperes 3907 minutes to days 4053 cups per second to fluid ounces per hour 1609 dozens to each 3893 megavolt-amperes reactive hour to kilovolt-amperes reactive hour
The Canadian Society for Exercise Physiology (CSEP) is the resource for translating advances in exercise science research into the promotion of fitness, performance, and health outcomes for Canadians. CSEP sets the highest standards for qualified exercise professionals through evidence-based practice and certification.”A year is the orbital in which Earth moves in its orbit around the Sun. Due to the Earth’s axial tilt, the course of a year sees the passing of the seasons, marked by changes in weather, the hours of daylight, and, consequently, vegetation and soil fertility. In temperate and subpolar regions around the globe, four seasons are generally recognized: spring, summer, autumn and winter. In tropical and subtropical regions several geographical sectors do not present defined seasons; but in the seasonal tropics, the annual wet and dry seasons are recognized and tracked.” “The minute is a unit of time or of angle. As a unit of time, the minute is equal to 1⁄60 (the first sexagesimal fraction) of an hour, or 60 seconds. In the UTC time standard, a minute on rare occasions has 61 seconds, a consequence of leap seconds (there is a provision to insert a negative leap second, which would result in a 59-second minute, but this has never happened in more than 40 years under this system). As a unit of angle, the minute of arc is equal to 1⁄60 of a degree, or 60 seconds (of arc). Although not an SI unit for either time or angle, the minute is accepted for use with SI units for both. The SI symbols for minute or minutes are min for time measurement.” An approximate numerical result would be: seventeen years is about eight million, nine hundred and forty-one thousand, one hundred and twenty-nine point zero two minutes, or alternatively, a minute is about zero times seventeen years.Now these conversion fractions are all carefully arranged so that there are matching pairs on the top and the bottom… years are on top and bottom, days top and bottom, same for hours and minutes. At the end we have “seconds” left on the top by itself.Hope that helps explain how to do this type of unit conversion. The same approach applies to units of time, or length (meters, feet, inches, miles) or weight (kilograms, milligrams, ounces, pounds) or anything else.
Do you see why that equals 1? Because 60 seconds is the same as 1 minute, so this conversion fraction is the same as saying 23/23 = 1 or 2/2 = 1, if the top and bottom are equal, then the fraction’s value = 1.
To solve this, the units that are on top and bottom cancel each other out. After the first step, we’ve converted years to days, then to hours, then to minutes and finally to seconds. At each step we can cancel out the units that are on both top and bottom and they just disappear:
I like doing unit conversions… that’s what this kind of problem is called. Minutes and years and months are all units, where a “unit” defines what the number of somethings is. In this case, we’re dealing with units of time, and the problem looks like this:So to convert 17 years to seconds, we just need a series of conversion fractions, and we keep multiplying them until we get from years to seconds, like this: Now that is one way to calculate it, but it’s not truly accurate and might be the wrong answer. It’s close, but in truth there are MORE than 365 days in one year, but less than 366 days. A more accurate unit conversion is close to 365.24 days in a year, but to truly get to the exact number of seconds in 17 years, one should use a conversion factor that is precise out to about 9 decimal places, and I don’t have such a conversion factor handy. And in fact, I don’t think all years are precisely the same length, so the number of days in a year might vary such that there is no single conversion unit. But this answer is fairly close to the right answer, somewhere around 536 million seconds in 17 years. The way to do this is by multiplying what is known (17 years) times whatever unit conversions we know until we get to the number of seconds. A unit conversion looks like this usually:Some physical activity is better-suited for children than adolescents. For example, younger children usually strengthen their muscles when they do gymnastics, play on a jungle gym, or climb trees. Children do not usually need formal muscle-strengthening programs, such as lifting weights. As children grow older and become adolescents, they may start structured weight lifting programs. They may do these types of programs along with their sports team practices.This may sound like a lot, but don’t worry! Children may already be meeting the recommended physical activity levels. You can also see ways to encourage children to participate in activities that are age-appropriate, enjoyable, and offer variety.
On a scale of 0 to 10, where sitting is a 0 and the highest level of activity is a 10, moderate-intensity activity is a 5 or 6. When children do moderate-intensity activity, their heart beats faster, and they breathe much harder than when they are at rest or sitting. Vigorous-intensity activity is a level 7 or 8. When children do vigorous-intensity activity, their heart beats much faster than normal, and they breathe much harder than normal.
The amount of physical activity children need depends on their age. Children ages 3 through 5 years need to be active throughout the day. Children and adolescents ages 6 through 17 need to be active for 60 minutes every day.
Another example is when children walk to school with friends each morning, they’re probably doing moderate-intensity aerobic activity. But when children run, or chase others while playing tag during recess, they’re probably doing vigorous-intensity activity.
Check out the Physical Activity Guidelines for Americans, 2 Edition [PDF-15.2MB] for more information about the recommended levels of physical activity for children.While every effort is made to ensure the accuracy of the information provided on this website, neither this website nor its authors are responsible for any errors or omissions. Therefore, the contents of this site are not suitable for any use involving risk to health, finances or property.
To convert a value from years to minutes, just multiply the number of years by 525960 (conversion factor). Use the formula below to convert from years to minutes:
You can use the unit converter to convert from one measurement to another. For example, you could convert from Celsius to Fahrenheit or cups to liters.You can use the calculator for any math problem you want to solve, like calculating the tip at a restaurant, making graphs, or solving geometry problems.
Many of the above units can be used with the standard metric prefixes yocto, zepto, atto, femto, pico, nano, micro, milli, centi, deci, deca, hecto, kilo, mega, giga, tera, peta, exa, zetta, and yotta. Abbreviated units can also be used with abbreviated prefixes y, z, a, f, p, n, µ, m, c, d, da, h, k, M, G, T, P, E, Z, and Y. For example, you can use “km” for “kilometer” and “GB” for “gigabyte.”
If a color you searched for doesn’t show up, the color code may not have been entered correctly. Try to search for a valid color code in one of the formats listed in “Color codes you can search.”
These guidelines state that children and adolescents be provided opportunities and encouragement to participate in physical activities that are appropriate for their age, that are enjoyable, and that offer variety.The Physical Activity Guidelines for Americans, 2nd edition recommend that children and adolescents ages 6 to 17 years do 60 minutes or more of moderate-to-vigorous physical activity daily. The national recommendation for schools is to have a comprehensive approach for addressing physical education and physical activity in schools. This approach is called Comprehensive School Physical Activity Programs. Regular physical activity can help children and adolescents improve cardiorespiratory fitness, build strong bones and muscles, control weight, reduce symptoms of anxiety and depression, and reduce the risk of developing health conditions such as:
Conclusive scientific evidence, based on a wide range of well-conducted studies, shows that physically active people have higher levels of health-related fitness, a lower risk profile for developing a number of disabling medical conditions, and lower rates of various chronic noncommunicable diseases than do people who are inactive.
These recommendations are applicable for all older adults irrespective of gender, race, ethnicity or income level. However, the communication strategies, dissemination and messaging of the recommendations may differ in various population groups in order to be most effective.The recommendations presented in this document use the concepts of frequency, duration, intensity, type and total amount of physical activity needed for health enhancement and prevention of NCDs. Box 1 includes definitions of these and other useful concepts. Further information can be found in the Glossary in Appendix 5.
The review of the literature relating cardio respiratory fitness, muscular strength, metabolic health and bone health to the rationale for relation and dose response patterns was based on an evaluation from the CDC literature review (2008) the evidence reviews from Warburton et al (2007 and 2009), the review by Bauman et al (2005) and the systematic reviews by Paterson et al (2007 and 2009). (11, 13, 20, 21)Whenever possible, children and youth with disabilities should meet these recommendations. However they should work with their health care provider to understand the types and amounts of physical activity appropriate for them considering their disability.
It should be noted that in populations that are already active, the national physical activity guidelines should not promote a physical activity target that would encourage a reduction in their current levels.The volume of physical activity associated with the prevention of different chronic NCDs varies. Although the current evidence is insufficiently precise to warrant separate guidelines for each specific disease, it is sufficiently sound to cover all the health outcomes selected.
The recommendations can be applied to older adults with disabilities however they may need to be adjusted for each individual, based on their exercise capacity and specific health risks or limitations.
The costs of adopting these recommendations are minimal and essentially related to the translation into country settings, communication and dissemination. Implementation of comprehensive policies that facilitate the achievement of the recommended levels of physical activity will require additional resource investment.The guidelines group reviewed the above cited literature and recommended that in order to improve cardiorespiratory and muscular fitness, bone health, reduce the risk of NCDs and depression: Physically active adults are likely to have less risk of a hip or vertebral fracture. Increases in exercise training can minimize the decrease in spine and hip bone mineral density. Increases in exercise training enhance skeletal muscle mass, strength, power, and intrinsic neuromuscular activation. (11, 13, 18, 19) The recommendations listed above are applicable to the following health conditions: cardio-respiratory health (coronary heart disease, cardiovascular disease, stroke and hypertension); metabolic health (diabetes and obesity); bone health and osteoporosis; breast and colon cancer and prevention of falls, depression and cognitive decline.These recommendations are applicable for all adults irrespective of gender, race, ethnicity or income level. However, to be most effective, the type of physical activity, the communication strategies, dissemination and messaging of the recommendations, may differ in various population groups. The retirement age, which varies from country to country, should also be taken into consideration when implementing interventions to promote physical activity.
These guidelines are relevant to all children aged 5–17 years unless specific medical conditions indicate to the contrary. Children and youth should be encouraged to participate in a variety of physical activities that support the natural development and are enjoyable and safe.These recommendations are applicable for all children and youth irrespective of gender, race, ethnicity, or income level. However the communication strategies, dissemination and messaging of the recommendations may differ so as to be most effective in various population subgroups.
Overall, the benefits of being physically active and implementing the above recommendations outweigh the harms. Activity-related adverse events such as musculoskeletal injuries are common but are usually mild, especially for moderate-intensity activities such as walking. The inherent risk of adverse events can be significantly reduced by a progressive increase in the activity level, especially in sedentary older adults. A series of small increments in physical activity, each followed by a period of adaptation, is associated with lower rates of musculoskeletal injuries than is an abrupt increase to the same final level. For sudden cardiac adverse events, intensity of activity, rather than frequency or duration appears to have more adverse effect. The selection of low-risk activities, and prudent behaviour while performing any activity, can minimize the frequency and severity of adverse events and maximize the benefits of regular physical activity.
Higher volumes of activity (i.e. greater than 150 minutes per week) are associated with additional health benefits. However the evidence is not available to identify additional or increased benefits for volumes greater than 300 minutes per week.It should be noted that in populations that are already active, the national physical activity guidelines should not promote a physical activity target that would encourage a reduction in current levels.
The costs of adopting these recommendations are minimal and essentially related to the translation into country settings, communication and dissemination. Implementation of comprehensive policies that will facilitate the achievement of the recommended levels of physical activity will require additional resource investment.
In older adults with poor mobility, there is consistent evidence that regular physical activity is safe and reduces risk of falls by nearly 30%. For prevention of falls, most evidence supports a physical activity pattern of balance training and moderate-intensity muscle-strengthening activities three times per week. There is no evidence that planned physical activity reduces falls in adults and older adults who are not at risk of falls. Evidence specific for this age group related to the maintenance or improvement of balance for those at risk of falling was reviewed from the systematic reviews by Paterson (2007) and Patterson and Warburton (2009). (20, 21)
The following section presents the recommended levels of physical activity for three age groups: 5–17 years old, 18–64 years old and 65 years old and above. These age groups were selected taking into consideration the nature and availability of the scientific evidence relevant to the selected outcomes. The recommendations do not address the age group of children less than 5 years old. Although children in this age range benefit from being active, more research is needed to determine what dose of physical activity provides the greatest health benefits.These guidelines are relevant to all healthy adults aged 18–64 years unless specific medical conditions indicate to the contrary. The guidelines also apply to individuals in this age range with chronic noncommunicable conditions not related to mobility such as hypertension or diabetes. Pregnant, postpartum women and persons with cardiac events may need to take extra precautions and seek medical advice before striving to achieve the recommended levels of physical activity for this age group.There is a direct relationship between physical activity and cardiorespiratory health (risk reduction of CHD, CVD, stroke, hypertension). Physical activity improves cardiorespiratory fitness. Fitness has direct dose-response relations between intensity, frequency, duration and volume. There is a dose-response relation for CVD and CHD. Risk reductions routinely occur at levels of 150 minutes of at least moderate-intensity activity per week. (11, 13–19)These recommendations can be applied to adults with disabilities. However they may need to be adjusted for each individual based on their exercise capacity and specific health risks or limitations.
There is a favourable and consistent effect of aerobic physical activity on achieving weight maintenance. Accumulation of energy expenditure due to physical activity is what is important to achieving energy balance. Accumulation of physical activity can be obtained in short multiple bouts of at least 10 minutes, or one long bout to meet physical activity expenditure goals for weight maintenance. The evidence is less consistent for resistance training, in part, because of the compensatory increase in lean mass, and the smaller volumes of exercise employed. There is substantial inter-individual variability with physical activity and weight maintenance; more than 150 minutes of moderate-intensity activity per week may be needed to maintain weight. Data from recent well-designed randomized control trials lasting up to 12 months indicate that aerobic physical activity performed to achieve a volume of at least 150 minutes per week is associated with approximately 1–3% weight loss, which is generally considered to represent weight maintenance. (11)Inactive adults or adults with disease limitations will have added health benefits if moving from the category of “no activity” to “some levels” of activity. Adults who currently do not meet the recommendations for physical activity should aim to increase duration, frequency and finally intensity as a target to achieving the recommended guidelines.There is conclusive evidence that the physical fitness and health status of children and youth are substantially enhanced by frequent physical activity. Compared to inactive young people, physically active children and youth have higher levels of cardiorespiratory fitness, muscular endurance and muscular strength, and well-documented health benefits include reduced body fat, more favourable cardiovascular and metabolic disease risk profiles, enhanced bone health, and reduced symptoms of anxiety and depression.
These benefits are observed in adults in the older age range, with or without existing NCDs. Hence inactive adults of the 65 years and above age group, including those with NCDs, are likely to gain health benefits by increasing their level of physical activity. If they cannot increase activity to levels required to meet guidelines, they should be active to the level their abilities and health conditions allow. Older adults who currently do not meet the recommendations for physical activity should aim to increase physical activity gradually, starting with increasing duration and frequency of moderate-intensity activity before considering increasing the intensity to vigorous-intensity activity. In addition, strong evidence indicates that being physically active is associated with higher levels of functional health, a lower risk of falling, and better cognitive function. There is observational evidence that mid-life and older adults who participate in regular physical activity have reduced risk of moderate and severe functional limitations and role limitations. In older adults with existing functional limitations, there is fairly consistent evidence that regular physical activity is safe and has a beneficial effect on functional ability. However, there is currently little or no experimental evidence in older adults with functional limitations that physical activity maintains role ability or prevents disability. The CDC literature Review (2008) and the systematic reviews by Paterson (2007) and Patterson and Warburton (2009) were used to develop the recommendation related to limited mobility due to health conditions. The dose-response pattern related to depression and cognitive decline were reviewed from the CDC Literature review (2008). (11, 20, 21)
